Number base converter

Convert whole numbers between binary, octal, decimal, hex and any base up to 36.

Binary (base 2)0b1111 1111

Octal (base 8)0o377

Decimal (base 10)

Hex (base 16)0xff

Base 36 (base 36)73

Custom base

8 bits

Whole numbers of any size. Prefixes like 0x and 0b, and spaces or underscores between digits, are fine.